6642266828 has 48 divisors (see below), whose sum is σ = 12049884000. Its totient is φ = 3201630720.

The previous prime is 6642266819. The next prime is 6642266831. The reversal of 6642266828 is 8286622466.

It is a super-2 number, since 2×6642266828² = 88239417228698363168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5595251 + ... + 5596437.

It is an arithmetic number, because the mean of its divisors is an integer number (251039250).

Almost surely, 2^6642266828 is an apocalyptic number.

It is an amenable number.

6642266828 is a deficient number, since it is larger than the sum of its proper divisors (5407617172).

6642266828 is a wasteful number, since it uses less digits than its factorization.

6642266828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610 (or 1608 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 50.

The square root of 6642266828 is about 81500.1032391984. The cubic root of 6642266828 is about 1879.7731380849.

The spelling of 6642266828 in words is "six billion, six hundred forty-two million, two hundred sixty-six thousand, eight hundred twenty-eight".